# -*- coding: utf-8 -*-
# author yzs
# date 2018-12-08
#
# Description
# Your task is to Calculate a + b.
# Input
# The input will consist of a series of pairs of integers a and b, separated by a space, one pair of integers per line.
# Output
# For each pair of input integers a and b you should output the sum of a and b, and followed by a blank line.
# Sample Input 1 
# 1 5
# 10 20
# Sample Output 1
# 6
#
# 30
#


while True:
    try:
        a,b = list(map(int, input().split()))
        sum = a+b
        print(sum)
        print()
    except EOFError:
        break